// Don't change these parameters
var delay        = 500; /////
var menuElement  = new Array ();
var usedWidth    = 0;
var numOfMenus   = 0;
/// ----------------------------

// check browser version
isNC    = (document.layers) ? 1 : 0;
isOPERA = (navigator.userAgent.indexOf('Opera') >= 0)? true : false;
isIE    = (document.all && !isOPERA)? true : false;
isDOM   = (document.getElementById && !isIE && !isOPERA)? true : false;

var topID  = -1;

// constructor of menu elements
function menuConstructor (id, content) {
	this.ID            = id;
	this.parentID      = content [0]*1;
	this.parentItemID  = content [1]*1;
	this.width         = content [2]*1 + 50;
	this.timerID       = -1;
	this.isOn          = false;
	this.item          = new Array ();
	this.currItemID    = -1;

	this.x = content [3]*1;
	if (this.x < 0 && this.parentID == -1) {
		this.x = initX + usedWidth;
		usedWidth = usedWidth + this.width;
	} else if (this.x < 0 && this.parentID > -1) {
		this.x =  menuElement [this.parentID].x
			      + menuElement [this.parentID].width
			      - xOverlap;
	}

	this.y = content [4]*1;
	if (this.y < 0 && this.parentID == -1)
		this.y = initY;
	else if (this.y < 0 && this.parentID > -1)
		this.y =  menuElement [this.parentID].y
	 		      + itemHeight*this.parentItemID
			      + yOverlap;

	items = content [5];

	layerBody = '<table width=' + this.width + ' cellpadding=0 cellspacing=' + borderSize + ' border=0>';

	for (j = 0; j <= items.length - 2; j = j + 2) {
		controlBlock = ' onMouseOver = "enterItem (' + this.ID + ', ' + ((j + 2)/2 - 1) + ');" onMouseOut = "exitItem (' + this.ID + ', ' + ((j + 2)/2 - 1) + ');" ';
		layerBody += '<td height=' + itemHeight + ' width=' + this.width + '><a class=subMenu href='+ items [j + 1] +' ' + controlBlock + '>' + items [j] + '</a></td>';
		if (j < items.length - 2)
			layerBody = layerBody +  '<tr>\n';
		else
			layerBody = layerBody + '\n';
	}

	if (!isNC)
		layerHeader = '<div id=Menu' + this.ID +
				   	   ' onMouseOver="enterMenu (' + this.ID + ');" onMouseOut = "exitMenu (' + this.ID + ');"' +
		    	       ' style="width: '+this.width+'; visibility: hidden; position: absolute; z-index:50; filter:alpha(opacity=0);">';
	else
		layerHeader = '<layer id=Menu' + this.ID +
					   ' onMouseOver="enterMenu (' + this.ID + ');" onMouseOut = "exitMenu (' + this.ID + ');"' +
					   ' visibility=hide left=' + this.x + ' top =' + this.y + '>';

	layerHeader += '<table width=' + this.width + ' cellpadding=0 cellspacing=0 border=0>' +
				    '<td >';

	layerFooter = '</table></td></table>';

	if (!isNC)
		layerFooter = layerFooter + '</div>';
	else
		layerFooter = layerFooter + '</layer>';

	document.writeln (layerHeader + layerBody + layerFooter);

	return this;
}

function enterTopItem (ID) {
	if (topID != ID && topID != -1)
		hideTree (topID);
	releaseTree (ID);
	topID = ID;
	show (ID);
}
function exitTopItem (ID) {
	menuElement [ID].timerID = setTimeout ('hide (' + ID + ')', delay);
}

function enterItem (menuID, itemID) {
	var currItemID = menuElement [menuID].currItemID;

	if (currItemID != i & currItemID > -1)
		hide (currItemID);

	for (var i = 0; i < numOfMenus; i++) {
		if (menuElement[i].parentID == menuID && menuElement[i].parentItemID == itemID) {
			clearTimeout (menuElement [i].timerID);
			menuElement[i].timerID = -1;
			show (i);
			return 0;
		}
	}
	return -1;
}

function exitItem (menuID, itemID) {
	for (var i = 0; i < numOfMenus; i++) {
		if (menuElement[i].parentID == menuID && menuElement[i].parentItemID == itemID) {
			menuElement[i].timerID = setTimeout ('hide (' + i + ')', delay);
			return 0;
		}
	}
}

function enterMenu (ID) {
	var parentID = menuElement [ID].parentID;
	if (parentID == -1) {
		clearTimeout (menuElement [ID].timerID);
		menuElement [ID].timerID = -1;
	} else
		releaseTree (ID);
}
function exitMenu (ID) {
	timeoutTree (ID);
}

function hideTree (ID) {
	hide (ID);
	for (var j = 0; j < numOfMenus; j++) {
		if (menuElement [j].parentID == ID && menuElement [j].isOn) {
			hideTree (j);
			return 0;
		}
	}
}
function releaseTree (ID) {
	clearTimeout (menuElement [ID].timerID);
	menuElement [ID].timerID = -1;

	var parentID = menuElement [ID].parentID;
	if (parentID > -1)
		releaseTree (parentID);
}
function timeoutTree (ID) {
	menuElement [ID].timerID = setTimeout ('hide (' + ID + ')', delay);
	var parentID = menuElement [ID].parentID;
	if (parentID > -1)
		timeoutTree (parentID);
}

function FadeIn (fadeNaam) {
  if (document.all[fadeNaam].filters.alpha.opacity < 100) {
    document.all[fadeNaam].filters.alpha.opacity=document.all[fadeNaam].filters.alpha.opacity+30;
    setTimeout("FadeIn('" + fadeNaam + "')",20)
  }
}

function show (ID) {
	if (isDOM)
		document.getElementById('Menu' + ID).style.visibility = "visible";
  else if (isIE) {
		document.all['Menu' + ID].style.visibility = "visible";
 		document.all['Menu' + ID].filters.alpha.opacity=100;
 		var fadeNaam = 'Menu' + ID
 		//FadeIn (fadeNaam);
  } else if (isNC)
		document.layers[ID].visibility = "show";

	menuElement [ID].isOn = true;

	if (menuElement [ID].parentID > -1)
		menuElement [menuElement [ID].parentID].currItemID = ID;
}

function hide (ID) {
	if (isDOM)
		document.getElementById('Menu' + ID).style.visibility = "hidden";
  else if (isIE)
		document.all['Menu' + ID].style.visibility = "hidden";
  else if (isNC)
		document.layers[ID].visibility = "hide";

	menuElement [ID].isOn = false;

	if (menuElement [ID].parentID > -1)
		menuElement [menuElement [ID].parentID].currItemID = -1;
}

function createMenuTree () {
	for (var i = 0; i < menuContent.length; i++) {
		menuElement [i] = new menuConstructor (i, menuContent [i]);
		numOfMenus++;
	}
}

function menuLocation() {
  alert('0');
  if (window.innerWidth != null) {
   alert('1');
   if (window.innerWidth/2-240 < 150)
     //return (150);
   return window.innerWidth/2-240;
  }
  if (document.body.clientWidth != null) {
   alert('2');
   if (document.body.clientWidth/2-240 < 150)
     //return (150);
   return document.body.clientWidth/2-240;
  }
  //return(270);
  return 2;
}
createMenuTree ();